NBC entertainment chairman Bob Greenblatt told The Hollywood Reporter, "Although we did not ask Jack to participate in the competition, we were able to offer him two substantial alternative roles on the show, both of which he declined. This network does not discriminate on any basis."

Bob also stated, "First, we have the deepest affection for Sharon Osbourne and consider her to be part of the NBC family. And our hearts go out to her, Ozzy, Jack and his family at this time. We hold medical information in strict confidence and therefore cannot comment specifically about Jack, but as a company that cares deeply about the health and safety of everyone on our shows — especially one like Stars Earn Stripes that requires dangerous water stunts, strenuous physical activity, and uses live ammunition — we required all potential participants to undergo medical vetting to ensure that they could safely participate."

Still, it sounds like Sharon's leaving AGT regardless.

Yesterday she Tweeted, "Please don't misunderstand. I love @nbcagt w/ all my heart and will of course finish out the season. It is still one of the best shows on tv"